Spring-toothed cultivator



P. A. MAYHALL SPRING TooTHED cuLTIvA'roa Filed Aug. 2, 1922 v Patented Aug. 19, 1924.

unirse STAT-Es imam PORTER A.. MAYHALL, OF HALEYVILLE, ALABAMA.

SPRING-TOOTHED CULTIVATO-R.

Application filed August 2, 19224 Serial No. 579,273.

To all 'whom t may concern-f Be it. known that I, PORTER A. MAYHALL, a citizen of the United States, residing at Haleyville, in the county of l/Vinston, btate ci Alabama, have invented kcertain new and useful improvements in Spring-Toothed Cultivators; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which Vit appertains to make and use the same.

This invention relates to new and useiul improvements in cultivators and particularly toimprovements in spring-toothed cultivators.

One object of the invention is to provide a device of this character wherein the means tor mounting the spring teeth is constructed and arranged to permit greater Jflexibility to the teeth than in similar devices heretofore, and whereby danger of breaking the teeth is reduced to a minimum.

Other objects and advantages will be apparent from the 'following description when taken in connection with the accompanying drawing.

ln the drawing:

Figure 1 is a top plan view of a springtoothed cultivator made in accordance with the invention.

Figure 2 is a side elevation of the cultivator, showing the particular construction ot the rear Itoo-th holding bars, which provide tor the greater flexibility of the teeth.

Referring particularly to the` accompanying drawing, 10 represents the beam of the cultivator which has the usual handles, and the dra-ft means. Secured to thelower face of the beam 10, and extending horizontally at right angles from one side thereof, are the bars or plates 11, between which are secured, by means of the bolts 12, the torward ends of the spring cultivator teeth 13. Also secured to the lower face of the beam 10, at a suitable distance rearwardly of the bars or plates 11, and extending from the same side of the beam in parallel relation to the beam, are bars or plates 14, be-

tween which are disposed the rear portions of theshanks of the teethv 13, the rear curved portions of which extend downwardly into engagement with the ground. The tooth Shanks are secured lto the plates 14, and therebetween, b-y the bolts 15.

The rear portion of the `upperplate 14, throughout its length is Abent upwardly at an obtuse angle, as shown at 16, while the corresponding portion of the lower plate 14 is bent downwardly at an obtuse angle as seen at` 17 .f The lower face of the beam 10 is cut away, as shown at 10', to permit the easy attachment of the plates 14, and to provide a space tor the edge 16, of the upper of said plates. The widened or ilaring space, between the'rear edge portions of the plates 14 thus provide for the up and down movement of the Shanks of the teeth 13, as they flex during the operation of the cultiva-tor. By thus permitting the free liexing of ythe teeth, danger of breaking the teeth is reduced to a minimum. The flaring of the rear edges of the plates 14 may be increased or 'diminished in accordance with the amount of eXing the teeth are permitted to haveu l/Vhat is claimed is:

The combination with the beam of a cultivator and itsspring teeth, of a pair of superimposed bars secured to and extending from one side of the beam and clamping the forward end of the shank of said spring teeth therebetween, and a second pair of superimposed bars secured to and extending from the same side of the beam rearwardly of the first bars and in parallel relation thereto, said rear bars having the rear portion ofthe teeth secured therebetween and having their rear longer edges ared away fromi each other.

'In testimony whereof, I affix my signature, in the presence of two witnesses.

PGRTER A. MAYHALL.

Witnesses:

1C. J.-MARTIN, nR. S.-M.` WRIGHT. f 

